Ketjen (formerly Albemarle) is a medium-sized US chemical company, headquartered in Baton Rouge, Louisiana. Worldwide, Albemarle employs about 3,500 people. Albemarle manufactures products for drugs such as Ibuprofen and Tamiflu, and flame retardants for use in computers, televisions, insulation materials and cars, among others. The company also produces catalysts for making clean fuels. These catalysts are made at the Amsterdam site
